A method for controlling a washing machine of the present invention comprises the steps of: treating laundry with water supplied with a detergent; draining the used water, rotating the inner tub at high speed, and operating a pump to drain the water discharged from the laundry; rotating the inner tub at a first speed and supplying water into the inner tub via a dispenser; stopping the water supply through the dispenser, rotating the inner tub at a second speed, and supplying water into the inner tub through an injection nozzle; stopping the water supply through the injection nozzle and alternately rotating a pulsator at a third speed in both directions; stopping the rotation of the pulsator, rotating the inner tub at a second speed, and supplying water into the inner tub through the injection nozzle; operating the pump to drain the water from an outer tub; and rotating the inner tub at high speed, and operating the pump to drain the water discharged from the laundry.
